#定义加法运算
def add(a, b):
    result = a + b
    return result
#示例
result = add(2, 3)
print(result)

#定义减法运算
def sub(a, b):
    result = a - b
    return result
#示例
result =sub(2, 3)
print(result)

#定义乘法运算
def mul(a, b):
    result = a * b
    return result
#示例
result = mul(2, 3)
print(result)

#定义除法运算
def div(a, b):
    result = a / b
    return result
#示例
result = div(5, 3)
print(result)

#定义整除运算
def div_z(a, b):
    result = a // b
    return result
#示例
result = div_z(5, 3)
print(result)

#定义取余运算
def div_y(a, b):
    result = a % b
    return result
#示例
result = div_y(5, 3)
print(result)

#定义开方运算
def kf(a):
    result = a ** (1/2)
    return result
#示例
result = kf(9)
print(result)
